#!/bin/bash -e
#

set -E
set -o pipefail
set -x

if [ ! -x "$PWD/minio" ]; then
	echo "minio executable binary not found in current directory"
	exit 1
fi

WORK_DIR="$PWD/.verify-$RANDOM"
MINIO_CONFIG_DIR="$WORK_DIR/.minio"
MINIO_OLD=("$PWD/minio.RELEASE.2021-11-24T23-19-33Z" --config-dir "$MINIO_CONFIG_DIR" server)
MINIO=("$PWD/minio" --config-dir "$MINIO_CONFIG_DIR" server)

function download_old_release() {
	if [ ! -f minio.RELEASE.2021-11-24T23-19-33Z ]; then
		curl --silent -O https://dl.minio.io/server/minio/release/linux-amd64/archive/minio.RELEASE.2021-11-24T23-19-33Z
		chmod a+x minio.RELEASE.2021-11-24T23-19-33Z
	fi
}

function start_minio_16drive() {
	start_port=$1

	export MINIO_ROOT_USER=minio
	export MINIO_ROOT_PASSWORD=minio123
	export MC_HOST_minio="http://minio:minio123@127.0.0.1:${start_port}/"
	unset MINIO_KMS_AUTO_ENCRYPTION         # do not auto-encrypt objects
	export _MINIO_SHARD_DISKTIME_DELTA="5s" # do not change this as its needed for tests
	export MINIO_CI_CD=1

	MC_BUILD_DIR="mc-$RANDOM"
	if ! git clone --quiet https://github.com/minio/mc "$MC_BUILD_DIR"; then
		echo "failed to download https://github.com/minio/mc"
		purge "${MC_BUILD_DIR}"
		exit 1
	fi

	(cd "${MC_BUILD_DIR}" && go build -o "$WORK_DIR/mc")

	# remove mc source.
	purge "${MC_BUILD_DIR}"

	"${MINIO_OLD[@]}" --address ":$start_port" "${WORK_DIR}/xl{1...16}" >"${WORK_DIR}/server1.log" 2>&1 &
	pid=$!
	disown $pid
	sleep 30

	if ! ps -p ${pid} 1>&2 >/dev/null; then
		echo "server1 log:"
		cat "${WORK_DIR}/server1.log"
		echo "FAILED"
		purge "$WORK_DIR"
		exit 1
	fi

	shred --iterations=1 --size=5241856 - 1>"${WORK_DIR}/unaligned" 2>/dev/null
	"${WORK_DIR}/mc" mb minio/healing-shard-bucket --quiet
	"${WORK_DIR}/mc" cp \
		"${WORK_DIR}/unaligned" \
		minio/healing-shard-bucket/unaligned \
		--disable-multipart --quiet

	## "unaligned" object name gets consistently distributed
	## to disks in following distribution order
	##
	## NOTE: if you change the name make sure to change the
	## distribution order present here
	##
	## [15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]

	## make sure to remove the "last" data shard
	rm -rf "${WORK_DIR}/xl14/healing-shard-bucket/unaligned"
	sleep 10
	## Heal the shard
	"${WORK_DIR}/mc" admin heal --quiet --recursive minio/healing-shard-bucket
	## then remove any other data shard let's pick first disk
	## - 1st data shard.
	rm -rf "${WORK_DIR}/xl3/healing-shard-bucket/unaligned"
	sleep 10

	go install github.com/minio/minio/docs/debugging/s3-check-md5@latest
	if ! s3-check-md5 \
		-debug \
		-access-key minio \
		-secret-key minio123 \
		-endpoint http://127.0.0.1:${start_port}/ 2>&1 | grep CORRUPTED; then
		echo "server1 log:"
		cat "${WORK_DIR}/server1.log"
		echo "FAILED"
		purge "$WORK_DIR"
		exit 1
	fi

	pkill minio
	sleep 3

	"${MINIO[@]}" --address ":$start_port" "${WORK_DIR}/xl{1...16}" >"${WORK_DIR}/server1.log" 2>&1 &
	pid=$!
	disown $pid
	sleep 30

	if ! ps -p ${pid} 1>&2 >/dev/null; then
		echo "server1 log:"
		cat "${WORK_DIR}/server1.log"
		echo "FAILED"
		purge "$WORK_DIR"
		exit 1
	fi

	if ! s3-check-md5 \
		-debug \
		-access-key minio \
		-secret-key minio123 \
		-endpoint http://127.0.0.1:${start_port}/ 2>&1 | grep INTACT; then
		echo "server1 log:"
		cat "${WORK_DIR}/server1.log"
		echo "FAILED"
		mkdir -p inspects
		(
			cd inspects
			"${WORK_DIR}/mc" support inspect minio/healing-shard-bucket/unaligned/**
		)

		"${WORK_DIR}/mc" mb play/inspects
		"${WORK_DIR}/mc" mirror inspects play/inspects

		purge "$WORK_DIR"
		exit 1
	fi

	"${WORK_DIR}/mc" admin heal --quiet --recursive minio/healing-shard-bucket

	if ! s3-check-md5 \
		-debug \
		-access-key minio \
		-secret-key minio123 \
		-endpoint http://127.0.0.1:${start_port}/ 2>&1 | grep INTACT; then
		echo "server1 log:"
		cat "${WORK_DIR}/server1.log"
		echo "FAILED"
		mkdir -p inspects
		(
			cd inspects
			"${WORK_DIR}/mc" support inspect minio/healing-shard-bucket/unaligned/**
		)

		"${WORK_DIR}/mc" mb play/inspects
		"${WORK_DIR}/mc" mirror inspects play/inspects

		purge "$WORK_DIR"
		exit 1
	fi

	pkill minio
	sleep 3
}

function main() {
	download_old_release

	start_port=$(shuf -i 10000-65000 -n 1)

	start_minio_16drive ${start_port}
}

function purge() {
	rm -rf "$1"
}

(main "$@")
rv=$?
purge "$WORK_DIR"
exit "$rv"
